From now on, the FlexSlider is no longer supported by FotoBoxes. The development is chaotic, and the compatibility with jQuery I want not even to check. FotoPro 2.6 still contains the FlexSlider functions, but they are not documented in the help file, and the demos on my pages are deleted.

Since about 2 years, my MiniSlider, which is responsive and independent of jQuery & Co., has established itself best. I recommend to convert the FlexSlider galleries to MiniSlider. Sometime the FlexSlider will fail, and then you have to do this anyway